thumb|349x349px|Print of Clio, made in the 16th–17th century. Preserved at the Ghent University Library. In Greek mythology, Clio ( , ; ), also spelled Kleio, Cleio, or Cleo, is the muse of history,
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a2b6caca20df8d2e5e473c68788e38dec5f46ddaa71b7f9ecb25bd2202375. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e70fe30-8265-4588-a508-adc188d5609e.json and https://artists.proofprofile.net/proofs/artist/8e70fe30-8265-4588-a508-adc188d5609e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b37dbca53c28d587f93ec69ecf568883b3ab42d82608f00147df70ee4b8c59b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674ca780b08ed86cf354c1eeca4dc5220cd03bf12f9c7166cb89bde7203d7a2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe927c48330950719a4eadd175ac3762b977c186a4b7e36711f4f188ae1103fb1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc7e5e6b40c7228224d4a3e0a7fc58bd8509d0e7db8cc89b1fbf30c34320672. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeaea12c79ee1be98d6533a35e60081644e60c1817ade9eb0debc876ec2ef3ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95134529ac1415e90edeae19c8b8fab6864c985e594c388f87537a6f84a80f67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12320865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821bd88712da3e43b7d2588c2b2af24870c6e7b8f57b890742aacd953fa65be7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c03570f977f549f590d4af5677cab94e8d5c684e6f4876b6432e77401209e5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55e079bfe39c0175987994f1d58cf633acc52fac16ea2e089ee594f548fb3dc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f901d926e0e085cd41362367290e12c4d1c9b9f31b374c89b2a7432efed944. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9cc95693836b7d8c49dd546dbd1faa730ed2570cf0ac1f0ba0a7b97a89ccd9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR8GX2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe927c48330950719a4eadd175ac3762b977c186a4b7e36711f4f188ae1103fb1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12332062.
stay just a little while longer (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee0e29f0b102fd379d17b1a6e714a24758d94636e36916f56baa7610f2b562a. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ022118532.
Emily in Paris Season 4 (Soundtrack from the Netflix Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97633e2bb0b5149297efd49b1c8178bee7da2850da461a5c6799da00ca7b3e89. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUG12406446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee0e29f0b102fd379d17b1a6e714a24758d94636e36916f56baa7610f2b562a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQ022118532.